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Oxygen isotope composition of CI and CM chondrites. Data for CMs and CIs from Clayton and Mayeda (1999); CVs and CKs from Greenwood et al. (2010); COs from Greenwood and Franchi (2004). TFL: terrestrial fractionation line, Y&R: slope 1 line (Young and Russell, 1998), CCAM: carbonaceous chondrite anhydrous mineral line (Clayton et al., 1977; Clayton and Mayeda, 1999). |
δ18O | δ17O | Δ17O: given | Δ17O: linear | Comment |
---|---|---|---|---|
1.8140 | -4.0620 | -5.0200 | -5.005 | |
-0.0620 | -4.8220 | -4.7890 | -4.79 | |
-2.2690 | -7.0530 | -5.8550 | -5.873 |
Name | Class | δ18O | δ17O | Δ17O: calc | Δ δ18O | Δ δ17O | Δ Δ17O |
---|---|---|---|---|---|---|---|
Northwest Africa 7921 | CV3 | -0.3060 | -5.2230 | -5.064 | -0.13 | 0.09 | 0.16 |